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Table 1 Baseline characteristics for men and women by treatment group

From: The effects of caffeinated and decaffeinated coffee on sex hormone-binding globulin and endogenous sex hormone levels: a randomized controlled trial

 

MEN

WOMEN

Caffeinated

Decaffeinated

No Coffee

Caffeinated

Decaffeinated

No Coffee

 

(N = 4)

(N = 4)

(N = 6 )

(N = 10)

(N = 9)

(N = 9 )

Age (years)

37.2 (3.5)

35.0 (6.4)

47.3 (18.4)

40.0 (8.8)

43.2 (16.6)

38.4 (18.0)

Body mass index (kg/m2)

30.8 (1.9)

29.5 (2.7)

30.4 (1.3)

28.4 (1.9)

29.5 (2.2)

29.2 (2.5)

Waist circumference (cm)

97.7 (7.3)

102.9 (8.3)

102.0 (6.8)

85.9 (10.6)

90.9 (7.8)

88.3 (7.4)

Postmenopausal (n (%))

n/a

n/a

n/a

2 (20)

5 (56)

3 (33)

SHBG (nmol/L)

21.4 (13.7, 33.5)

19.5 (11.7, 32.5)

29.3 (18.2, 47.3)

52.6 (35.2, 78.6)

42.9 (28.6, 64.2)

38.1 (25.4, 57.0)

Testosterone (ng/dL)

387.9 (303.6, 495.7)

342.3 (259.0, 452.2)

475.5 (356.2, 634.6)

28.2 (19.2, 41.5)

27.3 (18.1, 41.1)

34.9 (23.2, 52.4)

Free testosterone (ng/dL)

8.0 (6.2, 10.3)

7.1 (5.3, 9.5)

8.0 (5.9, 10.7)

0.3 (0.2, 0.5)

0.3 (0.2, 0.5)

0.4 (0.2, 0.8)

Estradiol (pg/mL)

24.0 (17.0, 33.8)

21.7 (14.7, 32.1)

26.2 (17.5, 39.3)

47.4 (26.2, 85.8)

34.8 (18.6, 65.2)

47.7 (25.5, 89.4)

Free estradiol (pg/mL)

0.5 (0.3, 0.7)

0.4 (0.3, 0.7)

0.5 (0.3, 0.7)

0.8 (0.4, 1.4)

0.5 (0.3, 1.0)

0.8 (0.4, 1.5)

Testosterone : Estradiol

16.2 (11.4, 23.0)

15.8 (10.6, 23.5)

18.1 (12.0, 27.4)

0.6 (0.3, 1.2)

0.8 (0.4, 1.6)

0.7 (0.4, 1.5)

DHEAs (ng/mL)

184.1 (113.7, 298.1)

160.0 (92.4, 277.2)

161.7 (96.8, 270.1)

115.2 (82.7, 160.5)

98.1 (69.0, 139.3)

117.4 (82.7, 166.7)

  1. n/a, not applicable; SHBG, sex hormone-binding globulin; DHEAs, dehydroepiandrosterone sulfate.
  2. Data are arithmetic means (standard deviation) for continuous variables and percentages for categorical variables. Age-adjusted geometric means (95% confidence in intervals) are presented for hormone concentrations which did not follow a normal distribution.